scholarly journals The kaon semileptonic form factor in N f = 2 + 1 domain wall lattice QCD with physical light quark masses

2015 ◽  
Vol 2015 (6) ◽  
Author(s):  
P. A. Boyle ◽  
◽  
N. H. Christ ◽  
J. M. Flynn ◽  
N. Garron ◽  
...  
Keyword(s):  
Form Factor ◽  
Domain Wall ◽  
Lattice Qcd ◽  
Light Quark ◽  
Quark Masses

scholarly journals D meson semileptonic form factors in Nf = 3 QCD with Möbius domain-wall quarks

2018 ◽  
Vol 175 ◽  
pp. 13007 ◽  
Author(s):  
Takashi Kaneko ◽  
Brian Colquhoun ◽  
Hidenori Fukaya ◽  
Shoji Hashimoto
Keyword(s):  
Domain Wall ◽  
Lattice Qcd ◽  
Momentum Transfer ◽  
Lattice Spacing ◽  
Light Quark ◽  
D Meson ◽  
Form Factors ◽  
Scalar Form ◽  
Charm Quarks ◽  
Quark Masses

e present our calculation of D → π and D → K semileptonic form factors in Nf = 2 + 1 lattice QCD. We simulate three lattice cutoffs a-1 ≃ 2.5, 3.6 and 4.5 GeV with pion masses as low as 230 MeV. The Möbius domain-wall action is employed for both light and charm quarks. We present our results for the vector and scalar form factors and discuss their dependence on the lattice spacing, light quark masses and momentum transfer.

scholarly journals LIGHT QUARK MASSES FROM QUENCHED LATTICE QCD SIMULATIONS WITH DOMAIN WALL QUARKS

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 585-587 ◽  
Author(s):  
MATTHEW WINGATE
Keyword(s):  
Domain Wall ◽  
Lattice Qcd ◽  
Strange Quark ◽  
Lattice Spacing ◽  
Light Quark ◽  
Renormalization Constant ◽  
Mass Renormalization ◽  
Quark Masses ◽  
Strange Quark Mass ◽  
Fermion Action

Values for the strange quark mass and average up/down mass have been obtained from quenched lattice QCD simulations using the domain wall fermion action. This discretization preserves the properties of flavor and chiral symmetry at nonzero lattice spacing. Results are shown for two values of the lattice spacing. The mass renormalization constant is computed nonperturbatively.

scholarly journals DK I = 0, $$ D\overline{K} $$ I = 0, 1 scattering and the $$ {D}_{s0}^{\ast } $$(2317) from lattice QCD

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Gavin K. C. Cheung ◽  
◽  
Christopher E. Thomas ◽  
David J. Wilson ◽  
Graham Moir ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Scattering Amplitudes ◽  
Lattice Qcd ◽  
Finite Volume ◽  
Energy Region ◽  
Light Quark ◽  
Bound State ◽  
Vector Resonance ◽  
Quark Masses ◽  
Partial Waves

Abstract Elastic scattering amplitudes for I = 0 DK and I = 0, 1 $$ D\overline{K} $$ D K ¯ are computed in S, P and D partial waves using lattice QCD with light-quark masses corresponding to mπ = 239 MeV and mπ = 391 MeV. The S-waves contain interesting features including a near-threshold JP = 0+ bound state in I = 0 DK, corresponding to the $$ {D}_{s0}^{\ast } $$ D s 0 ∗ (2317), with an effect that is clearly visible above threshold, and suggestions of a 0+ virtual bound state in I = 0 $$ D\overline{K} $$ D K ¯ . The S-wave I = 1 $$ D\overline{K} $$ D K ¯ amplitude is found to be weakly repulsive. The computed finite-volume spectra also contain a deeply-bound D* vector resonance, but negligibly small P -wave DK interactions are observed in the energy region considered; the P and D-wave $$ D\overline{K} $$ D K ¯ amplitudes are also small. There is some evidence of 1+ and 2+ resonances in I = 0 DK at higher energies.

scholarly journals LIGHT QUARK MASSES: A STATUS REPORT AT DPF 2000

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 591-599 ◽  
Author(s):  
Rajan Gupta ◽  
Kim Maltman
Keyword(s):  
Lattice Qcd ◽  
Light Quark ◽  
Status Report ◽  
Quark Masses ◽  
Coherent Picture

A summary of the extraction of light quark masses from both QCD sumrules and lattice QCD simulations is presented. The focus is on providing a careful statement of the potential weaknesses in each calculation, and on integrating the work of different collaborations to provide a coherent picture.

scholarly journals D → Klv semileptonic decay using lattice QCD with HISQ at physical pion masses

2018 ◽  
Vol 175 ◽  
pp. 13027 ◽  
Author(s):  
Bipasha Chakraborty ◽  
Christine Davies ◽  
Jonna Koponen ◽  
G Peter Lepage
Keyword(s):  
Standard Model ◽  
Lattice Qcd ◽  
Semileptonic Decay ◽  
Light Quark ◽  
Form Factors ◽  
New Physics ◽  
Ckm Matrix ◽  
Quark Masses ◽  
The Standard Model ◽  
Fertile Ground

he quark flavor sector of the Standard Model is a fertile ground to look for new physics effects through a unitarity test of the Cabbibo-Kobayashi-Maskawa (CKM) matrix. We present a lattice QCD calculation of the scalar and the vector form factors (over a large q2 region including q2 = 0) associated with the D→ Klv semi-leptonic decay. This calculation will then allow us to determine the central CKM matrix element, Vcs in the Standard Model, by comparing the lattice QCD results for the form factors and the experimental decay rate. This form factor calculation has been performed on the Nf = 2 + 1 + 1 MILC HISQ ensembles with the physical light quark masses.

scholarly journals Excited and exotic charmonium, D s and D meson spectra for two light quark masses from lattice QCD

2016 ◽  
Vol 2016 (12) ◽  
Author(s):  
Gavin K.C. Cheung ◽  
◽  
Cian O’Hara ◽  
Graham Moir ◽  
Michael Peardon ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Light Quark ◽  
D Meson ◽  
Quark Masses
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